期刊
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
卷 29, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-651X/abe4c7
关键词
homogenization; variational approach; representative volume element; shape-memory alloys
资金
- DMREF Program (Designing Materials to Revolutionize and Engineer our Future) of the National Science Foundation [1534534]
A method based on fast Fourier transform (FFT) was developed for modeling the pseudo-elastic behavior and shape-memory effect in phase transforming materials, and its capabilities were demonstrated through a computational homogenization approach. The method was shown to be an order of magnitude faster than the finite element method for nonlinear problems, possibly achieving the same accuracy at a faster speed.
A fast Fourier transform (FFT) based method is developed to model the pseudo-elastic behavior and shape-memory effect in phase transforming materials. An infinitesimal strain based variational FFT formulation is adapted and enhanced to enable the solution of nonlinear, stress-controlled and thermo-mechanical problems. The capabilities of the method are illustrated by implementing a computational homogenization approach to modeling the thermo-mechanical response of shape memory alloys with heterogeneities. The accuracy and performance of the method is evaluated by comparison with finite element (FE) solutions for single- and multi-particle cells subjected to various loading schemes. For the class of nonlinear problems of interest, the proposed method is shown to be an order of magnitude faster than the FE method for a given resolution, and possibly for the same accuracy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据